THE CANADIAN ENTOMOLOGIST. 309 



joint longer than 4-5 united ; liind tarsi much longer than 



their tibia; Allomorpha, Cameron.* 



Anal cell in hind wings shorter than the submedian, briefly petiolate; 

 claws bifid. 



Head and thorax coarsely cribrately punctate; third antennal joint 



as long as joints 4-5 united. 9 . . . Pseudosiobla, Ashm., n. g. 



Head and thorax not cribrately punctate, shining ; third 



antennal joint scarcely longer than the 



fourth Aomodyctium, Ashm., n. g. 



6. Anal cell in hind wings not so long as the submedian, briefly petio- 



lated, the second discoidal cell present ; no closed submarginal cell. 

 Head and thorax coarsely cribrately punctate, opaque ; antennae 

 rather short, stout, not tapering off at tips. 



$ Pseudosiobla Ashm., n. g. 



(Type S. excavata, Nort.) 



Anal cell in hind wings a little longer than the submedian, a closed 



submarginal cell as well as the second discoidal cell present. 



Head and thorax not cribrately punctate, shining ; antennae 



tapering toward tips, the third joint long but shorter than 



joints 4-5 united. ? Parasiobla, Ashm., n. g. 



(Type P. bicolor, Ashm.) 



7. Anal cell in hind wings shorter than the submedian, briefly petio- 



lated 8. 



Anal cell in hind wings as long or a little longer than the submedian 

 cell. 



Lanceolate cell with an oblique cross-nervure ; claws cleft. 

 Clypeus large and deeply semicircularly emarginate. 



Second joint of hind tarsi one fourth the length of the 

 basal joint ; pedicel annular, wider than long. 



? Dimorphopteryx, Ashm., n. g. 



Second joint of hind tarsi one-third the length of 

 the basal joint ; pedicel not annular, fully twice 



* Allomorpha maybe wrongly placed in my laMc. Cameron says nothing about 

 the venation of the hind wings. I lis description reads, "'Alar neuration resembles 

 Strongylogaster (Cingulatus group)." Now, .V. ciiis^iilaliis has two discal cells in the hind 

 wings. Kirby, however, who, I believe, examined the type, says : " Hind -dniios 7vilh 

 one discal cell.'''' The artist, however, employed by Kirby has figured it on l^late \'., 

 No. 22, 7(iit/iotit a cell in llic hind ivimis '. In my perplexity I have followed the artist, 

 since I find his figures of sawfiies known to me perfectly accurate. 



